Add hook_help for the module and submodules

I will look on this.

Hi dineshkumarbollu

I applied your MR !35 to my local and confirmed that your patch created information to the module's hook help.

Please look at the screenshot attached for your reference

Thank you.

Hey @dineshkumarbollu, thanks for your contribution to Paragraphs Gridstack.

Your changes look good, except for a few things:
1) Please, take a look at coding standards issues.
2) I don't see hook_help for the paragraphs_gridstack_demo module (submodule of the main module).
3) Your commit message didn't follow the standards. Please, do commit amend and change it to "Issue: #3366381 Implemented hook_help()."

Thanks

Let me work on #6

@panchuk Below are the comments:
1) Please, take a look at coding standards issues.
=> Done

2) I don't see hook_help for the paragraphs_gridstack_demo module (submodule of the main module).
=> I can see that its already there. Please let me know if you are expecting somewhere else too. Attaching code for reference in paragraphs_gridstack_demo.module file

if ($route_name == 'help.page.paragraphs_gridstack_demo') {
    $output = '<h3>' . t('About') . '</h3>';
    $output .= '<p>' . t('The Paragraphs Gridstack Demo module provides several <em>Paragraphs types</em> for the <a href=":paragraphs">Paragraphs module</a>, but no separate user interface. For more information, see the <a href=":online">online documentation for the Paragraphs module</a>.', [
      ':online' => 'https://www.drupal.org/node/2444881',
      ':paragraphs' => Url::fromRoute('help.page', ['name' => 'paragraphs'])->toString(),
    ]) . '</p>';
}

Automatically closed - issue fixed for 2 weeks with no activity.